CVE-2025-6597Network attack vector

Sensitive-action access via autocreation reauthentication bypass

Published Feb 2, 2026 · Updated Feb 2, 2026

Authentication bypass in MediaWiki before 1.39.13, 1.42.7, 1.43.2, and 1.44.0 allows remote attackers to skip reauthentication. AuthManager treats automatic account creation as a fresh login, so its recent-authentication state is satisfied without a credential check. Exploitation requires account autocreation plus access to a sensitive action, and it bypasses only reauthentication rather than granting new permissions.

CVSS severity0.0
None
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in MediaWiki before 1.39.13, 1.42.7, 1.43.2, and 1.44.0 allows remote attackers to skip reauthentication. AuthManager treats automatic account creation as a fresh login, so its recent-authentication state is satisfied without a credential check. Exploitation requires account autocreation plus access to a sensitive action, and it bypasses only reauthentication rather than granting new permissions.

The record

CVE
CVE-2025-6597
Published
Feb 2, 2026
Updated
Feb 2, 2026
Vendor
Wikimedia Foundation
Product
MediaWiki
Classifications
CWE-22, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <1.39.13, 1.42.7, 1.43.2, 1.44.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wikimedia Foundation · MediaWikiversion=* <1.39.13, 1.42.7, 1.43.2, 1.44.0

Published CVSS scores

0.0Wikimedia FoundationCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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